5644816 has 20 divisors (see below), whose sum is σ = 11580732. Its totient is φ = 2656256.

The previous prime is 5644813. The next prime is 5644829. The reversal of 5644816 is 6184465.

It can be written as a sum of positive squares in 2 ways, for example, as 3097600 + 2547216 = 1760^2 + 1596^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5644813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10105 + ... + 10648.

Almost surely, 2^5644816 is an apocalyptic number.

It is an amenable number.

5644816 is an abundant number, since it is smaller than the sum of its proper divisors (5935916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5644816 is a wasteful number, since it uses less digits than its factorization.

5644816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20778 (or 20772 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 5644816 is about 2375.8821519596. The cubic root of 5644816 is about 178.0532601637.

The spelling of 5644816 in words is "five million, six hundred forty-four thousand, eight hundred sixteen".